/**
 * <copyright>
 * </copyright>
 *
 * $Id$
 */
package com.maschinenstuermer.profiler.trace.provider;


import java.text.DecimalFormat;
import java.text.NumberFormat;
import java.util.Collection;
import java.util.List;

import org.eclipse.emf.common.notify.AdapterFactory;
import org.eclipse.emf.common.notify.Notification;
import org.eclipse.emf.common.util.ResourceLocator;
import org.eclipse.emf.ecore.EStructuralFeature;
import org.eclipse.emf.ecore.util.EcoreUtil;
import org.eclipse.emf.edit.provider.ComposeableAdapterFactory;
import org.eclipse.emf.edit.provider.IEditingDomainItemProvider;
import org.eclipse.emf.edit.provider.IItemLabelProvider;
import org.eclipse.emf.edit.provider.IItemPropertyDescriptor;
import org.eclipse.emf.edit.provider.IItemPropertySource;
import org.eclipse.emf.edit.provider.IStructuredItemContentProvider;
import org.eclipse.emf.edit.provider.ITableItemLabelProvider;
import org.eclipse.emf.edit.provider.ITreeItemContentProvider;
import org.eclipse.emf.edit.provider.ItemPropertyDescriptor;
import org.eclipse.emf.edit.provider.ItemProviderAdapter;
import org.eclipse.emf.edit.provider.ViewerNotification;

import com.maschinenstuermer.profiler.trace.Metrics;
import com.maschinenstuermer.profiler.trace.ProfiledMethod;
import com.maschinenstuermer.profiler.trace.TraceFactory;
import com.maschinenstuermer.profiler.trace.TracePackage;

/**
 * This is the item provider adapter for a {@link com.maschinenstuermer.profiler.trace.ProfiledMethod} object.
 * <!-- begin-user-doc -->
 * @implements ITableItemLabelProvider 
 * <!-- end-user-doc -->
 * @generated
 */
public class ProfiledMethodItemProvider
	extends ItemProviderAdapter
	implements
		IEditingDomainItemProvider,
		IStructuredItemContentProvider,
		ITreeItemContentProvider,
		IItemLabelProvider,
		IItemPropertySource,
		ITableItemLabelProvider {
	/**
	 * This constructs an instance from a factory and a notifier.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	public ProfiledMethodItemProvider(AdapterFactory adapterFactory) {
		super(adapterFactory);
	}

	/**
	 * This returns the property descriptors for the adapted class.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public List<IItemPropertyDescriptor> getPropertyDescriptors(Object object) {
		if (itemPropertyDescriptors == null) {
			super.getPropertyDescriptors(object);

			addNamePropertyDescriptor(object);
		}
		return itemPropertyDescriptors;
	}

	/**
	 * This adds a property descriptor for the Name feature.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	protected void addNamePropertyDescriptor(Object object) {
		itemPropertyDescriptors.add
			(createItemPropertyDescriptor
				(((ComposeableAdapterFactory)adapterFactory).getRootAdapterFactory(),
				 getResourceLocator(),
				 getString("_UI_ProfiledMethod_name_feature"),
				 getString("_UI_PropertyDescriptor_description", "_UI_ProfiledMethod_name_feature", "_UI_ProfiledMethod_type"),
				 TracePackage.Literals.PROFILED_METHOD__NAME,
				 true,
				 false,
				 false,
				 ItemPropertyDescriptor.GENERIC_VALUE_IMAGE,
				 null,
				 null));
	}

	/**
	 * This specifies how to implement {@link #getChildren} and is used to deduce an appropriate feature for an
	 * {@link org.eclipse.emf.edit.command.AddCommand}, {@link org.eclipse.emf.edit.command.RemoveCommand} or
	 * {@link org.eclipse.emf.edit.command.MoveCommand} in {@link #createCommand}.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public Collection<? extends EStructuralFeature> getChildrenFeatures(Object object) {
		if (childrenFeatures == null) {
			super.getChildrenFeatures(object);
			childrenFeatures.add(TracePackage.Literals.PROFILED_METHOD__METRICS);
		}
		return childrenFeatures;
	}

	/**
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	protected EStructuralFeature getChildFeature(Object object, Object child) {
		// Check the type of the specified child object and return the proper feature to use for
		// adding (see {@link AddCommand}) it as a child.

		return super.getChildFeature(object, child);
	}

	/**
	 * This returns ProfiledMethod.gif.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public Object getImage(Object object) {
		return overlayImage(object, getResourceLocator().getImage("full/obj16/ProfiledMethod"));
	}

	/**
	 * This returns the label text for the adapted class.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public String getText(Object object) {
		String label = ((ProfiledMethod)object).getName();
		return label == null || label.length() == 0 ?
			getString("_UI_ProfiledMethod_type") :
			getString("_UI_ProfiledMethod_type") + " " + label;
	}

	/**
	 * This handles model notifications by calling {@link #updateChildren} to update any cached
	 * children and by creating a viewer notification, which it passes to {@link #fireNotifyChanged}.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public void notifyChanged(Notification notification) {
		updateChildren(notification);

		switch (notification.getFeatureID(ProfiledMethod.class)) {
			case TracePackage.PROFILED_METHOD__NAME:
				fireNotifyChanged(new ViewerNotification(notification, notification.getNotifier(), false, true));
				return;
			case TracePackage.PROFILED_METHOD__METRICS:
				fireNotifyChanged(new ViewerNotification(notification, notification.getNotifier(), true, false));
				return;
		}
		super.notifyChanged(notification);
	}

	/**
	 * This adds {@link org.eclipse.emf.edit.command.CommandParameter}s describing the children
	 * that can be created under this object.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	protected void collectNewChildDescriptors(Collection<Object> newChildDescriptors, Object object) {
		super.collectNewChildDescriptors(newChildDescriptors, object);

		newChildDescriptors.add
			(createChildParameter
				(TracePackage.Literals.PROFILED_METHOD__METRICS,
				 TraceFactory.eINSTANCE.createMetrics()));
	}

	/**
	 * Return the resource locator for this item provider's resources.
	 * <!-- begin-user-doc -->
	 * <!-- end-user-doc -->
	 * @generated
	 */
	@Override
	public ResourceLocator getResourceLocator() {
		return TraceEditPlugin.INSTANCE;
	}

	private double getRelativeTime(final Metrics metrics) {
		final IRootInvocation adapter = (IRootInvocation) EcoreUtil.getRegisteredAdapter(metrics, IRootInvocation.class);
		return adapter.getRelativeTime(metrics);
	}


	@Override
	public String getColumnText(Object object, int columnIndex) {
		final ProfiledMethod profiledMethod = (ProfiledMethod) object;
		final Metrics metrics = profiledMethod.getMetrics();
		
		final DecimalFormat percentFormat = (DecimalFormat) NumberFormat.getPercentInstance();
		percentFormat.setMaximumFractionDigits(0);
		percentFormat.setMinimumFractionDigits(0);
		percentFormat.setPositiveSuffix("");
		percentFormat.setNegativeSuffix("");

		final DecimalFormat callsFormat = (DecimalFormat) NumberFormat.getIntegerInstance();
		callsFormat.setGroupingUsed(true);

		final DecimalFormat millisecondsFormat = (DecimalFormat) NumberFormat.getIntegerInstance();
		millisecondsFormat.setPositiveSuffix(" ms");
		millisecondsFormat.setGroupingUsed(true);

		switch (columnIndex) {
		case 0:
			return profiledMethod.getName();
		case 1:
			final double relativeTime = getRelativeTime(metrics);
			return percentFormat.format(relativeTime);
		case 2:
			return millisecondsFormat.format(metrics.getTotalTimeNs() / 1000);
		case 3:
			return callsFormat.format(metrics.getCalls());
		case 4:
			long avgMs = metrics.getCalls() <= 0 ? 0 : (metrics.getTotalTimeNs() / metrics.getCalls() / 1000);
			return millisecondsFormat.format(avgMs);
		case 5:
			return millisecondsFormat.format(metrics.getMinTimeNs() / 1000);
		case 6:
			return millisecondsFormat.format(metrics.getMaxTimeNs() / 1000);
		default:
			return super.getColumnText(object, columnIndex);
		}
	}
	
	@Override
	public Object getColumnImage(Object object, int columnIndex) {
		return null;
	}
}
